Secret Weapon Basement Captive

From my old tale "The Snowden Snoops and the Secret Weapon"...

Leave it to Trish and Hannah to find mystery and danger in a social studies project! While hunting down information on a secret World War II project known as Project Wells, our two intrepid sleuths find themselves pursued by a mysterious nemesis and captured just as they discover the still-hidden secret weapon--a time machine! Soon the girls find themselves accidentally transported back into the spring of 1942, where they meet not only the creators of the Wells Machine--not only the bright but shy daughter of the project leader, young Maggie Provenzini--but a nest of Nazi spies out to steal the Machine for Hitler! And just to make things interesting, they find that they are no longer Tricia and Hannah, but Audrey and Beatrice, two intrepid young sleuths from the Snowden of 1942! They not only have to solve the mystery of the Wells Machine, but also find their way back into their own time before they forget who they really are!

In the illustration above, the Nazi spies have captured a frightened Maggie, and hold her captive in a dark, dank basement to blackmail her father Dr. Provenzini into giving the Machine to the Nazis. Poor Maggie, always afraid of the dark, is about to be imprisoned, helplessly bound and gagged, in the darkest place she could imagine, hoping that her two friends Audrey and Bea can rescue her and save the Machine...